Abstract

The aim of this study was to develop the Korean adaptation of the State-Trait Anger Expression Inventory-2 for adolescent (STAXI-2 for adolescent), designed to measure state anger (10 items), trait anger (10 items), anger-in (5 items), anger-out (5 items), and anger-control (5 items). An attempt was made to construct a pilot scale based on a variety of resources (e.g., STAXI-2 for child and adolescent, open-ended questionnaire on anger, review of the Korean adaptation of the STAXI/STAXI-2). As a result, a pilot scale was composed of 95 items, nearly three times the original scale. In Study 1, we examined the psychometric properties of the pilot scale in student sample nationwide (N = 359). Exploratory factor analyses and item-total correlations showed problematic factor structure. Thus, we deleted inappropriate items and replaced 9 items out of 35 items. In Study 2, we examined the psychometric properties of the second version of the Korean adaptation of the STAXI-2 for adolescent in student sample nationwide (N = 1,186). Exploratory factor analyses showed clear-cut factors for five subscales: state anger, trait anger, anger-in, anger-out, and anger-control. Further exploratory factor analyses showed that there are also two subscales under state anger (i.e., state anger/general mode vs. state anger/verbal·physical mode) and that there are also two subscales under trait anger (i.e., trait anger/temperament vs. trait anger/response). In addition, all subscales revealed satisfactory level of reliability. In sum, results provided support for the reliability and validity of the Korean adaptation of the STAXI-2 for adolescent. Thus, the Korean adaptation of the STAXI-2 for adolescent is a useful instrument in the area of psychology, medicine, nursing, education, counseling, criminal justice, welfare facilities, among others.